Diagnosing a Potential Fuel Problem

Oh look!
It is possible to start the engine down to about freezing without a working choke. I have no choke. But the engine really does need the timing, which I have given mine. But it takes a certain amount of familiarity with the combo, and once running it takes quite a bit of babysitting, during the warm-up. Even at 50 or 60 degreesF, it takes a minute or two, with an aluminum intake, and no crossover. Carb-icing is a constant threat as temps get cooler towards freezing.